Fix tests

Author: tastybento

src/main/java/world/bentobox/level/Level.java

@@ -106,7 +106,7 @@ public void onEnable() {
 		// Register listeners
 		this.registerListener(new IslandActivitiesListeners(this));
 		this.registerListener(new JoinLeaveListener(this));
-		this.registerListener(new MigrationListener(this));
+        this.registerListener(new MigrationListener(this));
 
 		// Register commands for GameModes
 		registeredGameModes.clear();

src/test/java/world/bentobox/level/LevelsManagerTest.java

@@ -216,7 +216,7 @@ public void setUp() throws Exception {
             islands.add(il);
         }
         // Supply no island levels first (for migrate), then islands
-        when(handler.loadObjects()).thenReturn(Collections.emptyList(), islands);
+        when(handler.loadObjects()).thenReturn(islands);
         when(handler.objectExists(anyString())).thenReturn(true);
         when(levelsData.getLevel()).thenReturn(-5L, -4L, -3L, -2L, -1L, 0L, 1L, 2L, 3L, 4L, 5L, 45678L);
         when(levelsData.getUniqueId()).thenReturn(uuid.toString());
@@ -231,7 +231,7 @@ public void setUp() throws Exception {
         when(iwm.getPermissionPrefix(any())).thenReturn("bskyblock.");
 
         lm = new LevelsManager(addon);
-        lm.migrate();
+
     }
 
     /**